HDFS-13588. Fix TestFsDatasetImpl test failures on Windows. Contributed by Xiao Liang.

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/TestFsDatasetImpl.java

@@ -25,6 +25,7 @@ import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FSDataOutputStream;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.FileSystemTestHelper;
+import org.apache.hadoop.fs.FileUtil;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.fs.StorageType;
 import org.apache.hadoop.hdfs.DFSConfigKeys;
@@ -260,7 +261,8 @@ public class TestFsDatasetImpl {
         conf.get(DFSConfigKeys.DFS_DATANODE_DATA_DIR_KEY).split(",");
     final String volumePathToRemove = dataDirs[0];
     Set<File> volumesToRemove = new HashSet<>();
-    volumesToRemove.add(StorageLocation.parse(volumePathToRemove).getFile());
+    volumesToRemove.add(StorageLocation.parse(volumePathToRemove).getFile()
+        .getAbsoluteFile());
 
     dataset.removeVolumes(volumesToRemove, true);
     int expectedNumVolumes = dataDirs.length - 1;
@@ -313,7 +315,7 @@ public class TestFsDatasetImpl {
     when(storage.getNumStorageDirs()).thenReturn(numExistingVolumes + 1);
     when(storage.getStorageDir(numExistingVolumes)).thenReturn(sd);
     Set<File> volumesToRemove = new HashSet<>();
-    volumesToRemove.add(loc.getFile());
+    volumesToRemove.add(loc.getFile().getAbsoluteFile());
     dataset.removeVolumes(volumesToRemove, true);
     assertEquals(numExistingVolumes, getNumVolumes());
   }
@@ -322,7 +324,7 @@ public class TestFsDatasetImpl {
   public void testAddVolumeFailureReleasesInUseLock() throws IOException {
     FsDatasetImpl spyDataset = spy(dataset);
     FsVolumeImpl mockVolume = mock(FsVolumeImpl.class);
-    File badDir = new File(BASE_DIR, "bad");
+    File badDir = new File(BASE_DIR, "bad").getAbsoluteFile();
     badDir.mkdirs();
     doReturn(mockVolume).when(spyDataset)
         .createFsVolume(anyString(), any(File.class), any(StorageType.class));
@@ -578,7 +580,7 @@ public class TestFsDatasetImpl {
         Set<File> volumesToRemove = new HashSet<>();
         try {
           volumesToRemove.add(StorageLocation.parse(
-              dataset.getVolume(eb).getBasePath()).getFile());
+              dataset.getVolume(eb).getBasePath()).getFile().getAbsoluteFile());
         } catch (Exception e) {
           LOG.info("Problem preparing volumes to remove: ", e);
           Assert.fail("Exception in remove volume thread, check log for " +
@@ -638,7 +640,8 @@ public class TestFsDatasetImpl {
           TimeUnit.MILLISECONDS);
       config.setInt(DFSConfigKeys.DFS_DATANODE_FAILED_VOLUMES_TOLERATED_KEY, 1);
 
-      cluster = new MiniDFSCluster.Builder(config).numDataNodes(1).build();
+      cluster = new MiniDFSCluster.Builder(config,
+          GenericTestUtils.getRandomizedTestDir()).numDataNodes(1).build();
       cluster.waitActive();
       FileSystem fs = cluster.getFileSystem();
       DataNode dataNode = cluster.getDataNodes().get(0);
@@ -660,7 +663,7 @@ public class TestFsDatasetImpl {
         // Remove write and execute access so that checkDiskErrorThread detects
         // this volume is bad.
         finalizedDir.setExecutable(false);
-        finalizedDir.setWritable(false);
+        assertTrue(FileUtil.setWritable(finalizedDir, false));
       }
       Assert.assertTrue("Reference count for the volume should be greater "
           + "than 0", volume.getReferenceCount() > 0);
@@ -681,10 +684,10 @@ public class TestFsDatasetImpl {
       } catch (IOException ioe) {
         GenericTestUtils.assertExceptionContains(info.getXferAddr(), ioe);
       }
-      finalizedDir.setWritable(true);
       finalizedDir.setExecutable(true);
+      assertTrue(FileUtil.setWritable(finalizedDir, true));
     } finally {
-    cluster.shutdown();
+      cluster.shutdown();
     }
   }